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Mass Transfer

Mass Transfer
The film penetration model of mass transfer was enunciated by

Toor and Marchello
Fick
Stefan
Gilliland

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Mass Transfer
For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

Calculated
Not required
Unknown
Known

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Mass Transfer
During constant rate period, the rate of drying decreases with the

Neither A nor B
Both A & B
Decrease in air temperature
Increase in air humidity

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Mass Transfer
For contacting a highly soluble gas with a liquid

Bubble the gas through liquid
Spray the liquid on gas stream
None of the listed here
Both of the options given here

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Mass Transfer
In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation.

Higher than
Either A or B, depends on the mixture composition
Equal to
Lower than

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Mass Transfer
Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.

Free
Critical
Unbound
Bound

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